9. Заполни пропуски нужной формой глаголов to be или to have, выражающих значение долженствования, и переведите предложения.
1. Ann______________ to open the window for a while every day, because her grandpa doesn’t go out. ______________________________________________________
2. He ______________to wear glasses as his eyesight is very weak. ______________________________________________________
3. Jack _____________ to do it, because his wife was ill. ______________________________________________________
4. My father _____________ to give some money to our mother. ______________________________________________________
5. You _________________to learn all the rules for the next lesson.